Oxygen Sensor OxyGuard Ocean D.O. Probe Back Catalog number: 450536 Availability: In the manufacturer's stock Price on request - + Recommended 443591 Visibility Disc acc. to Secchi, 3m steel rope, ma Price on request 439013 Conductivity Sensor type SST, max. depth 6.000met Price on request 438116-OUT Electronic Flow Meter for MultiNet Price on request